diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..2168b70
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.xcuserstate
+.DS_Store
\ No newline at end of file
diff --git a/EarthViewExample.xcodeproj/project.pbxproj b/EarthViewExample.xcodeproj/project.pbxproj
index 9711b98..5c7d2ac 100644
--- a/EarthViewExample.xcodeproj/project.pbxproj
+++ b/EarthViewExample.xcodeproj/project.pbxproj
@@ -37,6 +37,7 @@
 		91F77EA51539C32D00F8AE05 /* TPPropertyAnimation.m in Sources */ = {isa = PBXBuildFile; fileRef = 91F77E731539341B00F8AE05 /* TPPropertyAnimation.m */; };
 		91F77EA7153A089A00F8AE05 /* QuartzCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 91F77EA6153A089A00F8AE05 /* QuartzCore.framework */; };
 		91F77EA8153A08C300F8AE05 /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 91F77E8D1539349900F8AE05 /* main.m */; };
+		91F77EAC153A0F9B00F8AE05 /* LICENSE.txt in Resources */ = {isa = PBXBuildFile; fileRef = 91F77EAB153A0F9A00F8AE05 /* LICENSE.txt */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -90,6 +91,7 @@
 		91F77E881539342A00F8AE05 /* star1.jpg */ = {isa = PBXFileReference; lastKnownFileType = image.jpeg; path = star1.jpg; sourceTree = "<group>"; };
 		91F77E8D1539349900F8AE05 /* main.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = main.m; sourceTree = SOURCE_ROOT; };
 		91F77EA6153A089A00F8AE05 /* QuartzCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = QuartzCore.framework; path = System/Library/Frameworks/QuartzCore.framework; sourceTree = SDKROOT; };
+		91F77EAB153A0F9A00F8AE05 /* LICENSE.txt */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = LICENSE.txt; sourceTree = SOURCE_ROOT; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -142,6 +144,7 @@
 		91F77E301539335000F8AE05 /* EarthViewExample */ = {
 			isa = PBXGroup;
 			children = (
+				91F77EAB153A0F9A00F8AE05 /* LICENSE.txt */,
 				91F77E391539335100F8AE05 /* DRAppDelegate.h */,
 				91F77E3A1539335100F8AE05 /* DRAppDelegate.m */,
 				91F77E431539335100F8AE05 /* SceneView_iPhone.xib */,
@@ -270,6 +273,7 @@
 				91F77E891539342A00F8AE05 /* clear256.png in Resources */,
 				91F77E8B1539342A00F8AE05 /* grid256.png in Resources */,
 				91F77E8C1539342A00F8AE05 /* star1.jpg in Resources */,
+				91F77EAC153A0F9B00F8AE05 /* LICENSE.txt in Resources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 0000000..ecf7d4c
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,31 @@
+/*
+ Copyright (c) 2012, Ross Anderson
+ 
+ All rights reserved.
+ 
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+ 
+ * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+ 
+ * Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+ 
+ * Neither the name of Dancing Robots nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+ 
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
\ No newline at end of file